Sanitary pump



Feb. 15, 1949. w. E. BAKEWELL SANITARY PUMP 2 Sheets-Sheet 1 Filed Sept. 27, 1945 Feb. 15, 1949. w, E, E L 2,461,624

SANI TARY PUMP Filed Sept. 27, 1945 2 Sheets-Sheet 2 l uess a W 1 uffilb HorW Patented Feb. 15, 1949 SANITARY PUMP 'William E. "Bakewell. CedanFalls, Iowan assigner to Viking Pump Company, Cedar Falls, Iowa, a cornorationnflowa Application september 2'7, 1945;8eridlNoJBl8i907 1 Claim. 1 Theapresent invention relates to a pump and more-particularlycto a sanitary pumpior use in creameries,'ice cream plants, foodproducts, factories and refrigeration plants, which pump can-be easily assembled and disassembled to keep and Cosmetic Act met. These health measures require frequent cleaning of the'pump parts "to prevent spoilage and deterioration of the liquids 'hence the pump must be so constructed that .it can be easily disassembled and reassembled and the parts must be so arranged and constructed that they can .be reached for cleaning.

11: is an object of the invention, among others, toprovide a pump that is easily assembled and disassembled to allow speedy cleaning of the pump parts and insure the pump being out of operation a minimum length of time; a pump simple ofassembly and disassembly which does not require a skilled mechanic for this operation; a pump so constructed and arranged that the inlet and outlet of the pump are adjustable to any desired position; and wherein the assembled parts of the pump are held in such a'manner =asto provide a more positive seal between the pump parts. Other objects will become apparent from a detailed description to follow in conjunctioirwith the drawing.

*Inearrying out the objects of the invention there is provided a pump comprising an inletand outletto and from the pump.

The pump mechanism may be included-within a "casing with the-inlet and outlet in the casing member and :a detachable head portion attached townie endof' the casing by a clamp member to hold the pump mechanism in assembled relation. A support inember is provided for supporting the pump by receiving a portion of the pump therein which pump portion is an extension of the casing member. The pump is rotatable within the support 'member-to-beiadjustable within the support member to vary the location of the inlet-and outlet of the pump if desired and means are provided to rigidly secure the pump'wlthin "the support member'after being adjusted comqarlsing azelampmeans which-when loosened, allows movement of the pump within the support memberifor locatingthe inlet and outletin any desired I position and when, tightened, holdingrthe pump rigidlydnr the :adjusted position. The du tachable head portioniis attached to one end o the casing bya clamp memberto hold them mechanism in assembled relation which clamp membercontacts the head portion at a series oi points aroundithe periphery thereof to, force :the head portion .tightlyi against the casing member to provide :a seal.

With the foregoing and other obJectsin-view, the invention-will be. morefully described hereinatter and will be particularly pointed out .in the. claimsappended hereto.

In the drawings, ,wherein llketsymbols :reterto like or corresponding parts throughouhthesew eral views:

Figure-l 11s anend-elevationalyiew oflthe supportingmemberv shown partly in section.

.Ei-gure .2 is a. sideeelevational .view the same as 7 except a portionofthe support and pumpsare shown in section.

FiguresB to fi-inclusive are end elevationalviews showing the clamp member holding themes-drassembled .withithe respective figures showing difierent;:positioning .of the inlet; and outlet.

Figure 7, is a side elevational view showing tthe pumpin assembled relation and mounted within the supporting member.

figurer8risiaiside elevational view showing the pumpin assembledrelation but removedfrom the supporting member.

r'lfhe structure shown comprises-a pump mechanism iwh-ich pump mechanism is. included within anasingimemberlfl. The casingmember in has, woatedithereinian inlet portion ll leading to the pump mechanism within the casing andan outlet t2 -l-eading .away from the pump mechanism through casing-11:0. 'Ihepump-mechanism within the easingimay-beea pump dicthe' "Viking l ii vfi,xrrhenemrarmtor and idler-. mesh, *fnrmingra barrier ibeimeenithe :inlet and nmtlet :parts H and [2. snsrrthe idler zdraws avtamzitzcreates a suction.- and cthea-npenings :between the iidlerrafl rotor are filled with liquid rfromithe inlet. S the 1 idler :and :rotor mesh again the =.,enmrped liquid is forced outithroirgh theroutlet. Noalaim isvmade" tom new pumpmechanismhenceit ihas nob-been :diselosed.

:sn'e operation of a sanitaryipump, Where it: isrnecessaryztotclean the pump partsfr qflently. the pump -must :be i. disassembled and" the parts scrubbed :or cleaned with-steam. The present pump: structmte :shows :a mead portion fl much is thescasing ll) :md is iheid in assembled position by aclamp member The head portion I3 holds the pump mechanism assembled within the casing Ill and it is also necessary to have a seal between the casing Ill and head portion I3 so the pump mechanism may operate efficiently. In view of the use to which the sanitary pump is placed, the seal between the head portion IEand casing II) must be a metal to metal seal as no gasket members are allowed in lew of the sanitary requirements. The pres- 611% invention shows a new and improved clamping means It for this purpose. Casing II] has an on tanding flange I with the head portion I3 ab tting against said flange I5 in a metarto metal contact for sealing purposes. Clamp member I4 has two arms I6 and I1 which hook over and under the flange rigidly attached to the clamp I4 and another arm IB, pivoted at I9 to the clamp I4, that also hooks over flange I5.

In assembling the head portion I3 on casing I0, arms I6 and IT on clamp I4 are placed back of flange I5 while arm I8 is swung upwardly about pivot I9. After the arms I6 and II are properly in place, arm IB is swun d w w k of fla e I5. Clamp I4 carries a series of screw members 20-, which are then screwed down to exert their pressure against the outer periphery of the head portion I3. This in turn forces the head portion I3 against the casing flange IS in a metal to metal seal. Three screw members 20 are shown but it is to be understood more may be used if desired. This type of clamp has the advantage of applying pressure right at the sealing surfaces and tends to force the sealing surfaces tightly together hence there can be no component of force tending to pull the sealing surfaces apart. i

The casing member Ill has an extension 2| which receives a shaft 22 leading from the pump mechanism and a packing assembly (not shown) for sealing the space between the shaft 22 and extension ID. A gland member 23 is shown for applying a pressure to the packing within the extension 2I.

A support member 24 is provided to receive the pump mechanism. The support member has a base 25, a receiving portion 26 at one end to eceive extension 2| of the casing and a bearing ortion 21 at the other end to receive shaft end 22 therein. Shaft 22 has a splined coupling with la second shaft member 28 within the bearing portion 21 as shown clearly in Figure 2 with the coupled shaft ends beingsupported within bearing 29. Shaft 28 connects with a source of motive power which may be an electric motor or any other suitable means for rotating the pump mechanism. 7

The receiving portion 26 for the extension 2I on the casing is split at illl as clearly shown in Figures 1 and 2 and a bolt member 3| is provided, which bolt member is secured to one side of receiving portion 26 as at 22 and the other end of screw member 2| has a nut member 33. Nut member 33 can. be actuated to restrict or increase the width of. the split 30.

With thesupport 24 and pump casing II] as shown in Figure 8, the pump casing I0 is ready to be assembled in the support 24. Screw 33 on bolt 3| has been backed on its thread so as to make plit 30 as large as possible to receive extension 1| of c ing Ill within receiving portion 26 on the support 2i. The shaft, 22 is guided through receiving portion 26 into bearing portion 21 where the spline ccuplingbetween shafts, 22 and 28 is a e ted wit in bearin When this occurs. ex!

tension 2i is rotatably received within the receiving portion 26. The whole pump casing and assembly is then rotated within receiving portion 26 until the inlet II and the outlet l2 have assumed the desired position with regard to a piping system carrying the liquid products to be pumped and suitable connections made to this piping system. Screw 33 is then rotated to constrict space 30 which in turn makes receiving portion. 26 exert a clamping action on extension 2I to provide a rigid connection between these members. Figures 3 to 6 inclusive suggest the many different positions that can be taken by the.in1et II and outlet I2 with the particular supporting and clamping means between the support 24 and casing ID. This has the advanp tage that the pump can be adjusted for an existing piping system instead of adjusting the piping system for the pump.

It can be seen that the clamp I4 provides a' speedy means of disassembly and assembly for the pump and the structure is simple of design so an expert mechanic is not needed for this operation.

While the invention has been described in connection with one embodiment, it is to be understood that the words which have been used are words of description rather than of limitation, and that practice of the invention within the scope ofthe appended claims may be resorted to without departing from the true scope of the invention in all its aspects.

' I claim: I

A pump comprising a casing having a main body portion containing a pump. a cylindrical extension on the main body portion of the casing through which a pump shaft passes, an inlet and outlet in the main body portion of the casing to and from the pump, a support member for supporting the pump having a cylindrical receiving portion on one end of the support member to receive the cylindrical extension on the main body portion of the casing therein, said cylindrical receiving portion for the extension on the main body portion of the casing being split and having a clamp member to draw the split sections together, said cylindrical extension for the extension on the main body portion of the casing being rotatable in the receiving portion to vary the location of the inlet and outlet on the pump when the clamp member is released, said clamp member when tightened clamping the receiving portion around the cylindrical extension on the main body portion of the casing to render the cylindrical extension and main body portion immovable within the support member, a secgpnd receiving portion on the support member sp God from the first mentioned receiving portion having a bearing therein and the pump shaft extending into the bearing and coupled to a shaft extended from a motive source within the bearing in the second receiving portion.

WM. E. BAKEWELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Heitz June 3 

